Means for forming paper bags or cardboard boxes



June 24, 1930 E. H. JAHNE.

MEANS FOR FORMING PAPER mes 0R CARDBOARD BOXES Filed June 19, 3 Sheets-Sheei 1 cam- June 24, 1930. E. H. JAHNE 7 I .MEANS FOR FORMING PAPER BAGS OR CARDBOARD BOXES Filed June 19, 1929 3 Sheets-Sheet 2 Fig. 4 Fig. 5

| I c a 7 1 -2 i l I I N? I i Fig. 6

June 24, 1930. E. H. JAHNE ,7 7

MEANS FOR FORMING PAPER BAGS OR CARDBOARD BOXES Filed Jux le 19. 1929 s Sheets-Sheet z,

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Patented June 24, 1930 I nmxs'r HERMANN Jinan,

OF DBESDEN, GEBMAINY, ASSIGNORYTO THE FIRM UNL' VERSELLE CIGARETTENMASCHINEN-FABRIK J. C. MULLER 8a 00., F DBESIQEN,

GERW

arms FOB romaine PAPER Application filed Julie 19, 1929, SerialNo.

Devices for forming paper bags or the like with flat rectangular bottoms are known 1n which a former is used which grips a paper 0 the bag on each side wall of the former whereupon further folders press in the bottom flaps and finally the remaining sides which are coated if desired with adhesive are formed by folders applied to the bag on the former.

- Since in devices of this kind the folders have been formed as flaps operated by the former rapid operation is not possible while unsatisfactory work was produced due to the sensitiveness of the flaps acting under du lex springs.

s distinguished therefrom the present invention resides in this that in the sha ing channel rollers provided on the' perip cry with wedge shaped-grooves are freely rotatably mounted at two opposite side walls of. the former in such manner that they roll along the moving former the edges of which en age the wedge shaped grooves in the rol ers.

In accordance with the invention also, the rollers drawn by springs into their position of rest on their profiled parts bearing on the side walls are provided with notches or recesses which are so disposed with respect to the arriving former that the bottom portion enters the recesses or notches and the folding of the side walls commences only later when the former has set the rollers in motion by means of projections mounted on the rollers. The shaped rollers co-operating with the former rest on the corresponding side walls of the former and are entrained by friction; The still projecting sides can then be; turned over by means of known folders or rails.

- work in different shown) to through holder 16 or the like.

BAGS OR CARDBOARD BOXES 372,19),- and in Germany June 26, 1928.

The invention is illustrated inthe accom panying drawing in which Fig. 1 is a side elevation, Fig. 2 a front elevation and Fig. 3 a horizontal section on the line 3-3 of Fig. 2. Figs. 4 and 5 show to enlarged scale the conditions. Figsufi, 7 and 8 show to enlarged scale the co-operation of the rollers with the shaping member.

The principal parts of the device are as follows he former or die 1, the shaping channel 2 in which the former operates, the two rollers 4; and 5 formed with wedge shaped grooves 3, the rails or bars 6 and 7, and the ejector 8. 1

Referring to the drawing, the rectangular blanks 2 are brought by sultable means (not the plates 9 and 10 in front of the opening 11 of the shaping channel 2. The

former 1 is now moved downwards and passes with the blankinto the shaping channel, the side walls of the bag being thus formed The former then passes to the rollers 4 and 5, the edges of the blank projecting beyond the formerentering the 'notches12 in the rollers/L and 5 (Fig. 6 At the same time the front wall of the ormer 1 strikes against the projections 13 on the rollers which are thus set in rotation (Fig. 7) and roll along two edges of. the moving former. As the result the two side walls 8' are folded on the former (Fig. 8). While now the former moves forwards the two sides b are folded by the rails orbars 6. The sides .9 in upright position move past the rails 6 the gaps 14 and are then folded by the ralls 7 Whenthe former hasreached the end of its stroke resilient strippers 15 engage hind the bag and retain it when the former moves upwards again. The ejector 8 then ejects the completed ha or box into a pile Efter the former has moved out of the shaping channel the rollers 4, 5 are rotated backwards by springs 17 until the pro ections 18 on the rollers strike 50 I: in ,rotation.

I tio n*wit :Llgshape, folding-.means acting to form two sides and .the bottom and means for pressing The operation can then be rep The stops 18 and 19.permit therollers 4 and 5 to make only a single revolution. The diameter of the rollers must therefore be such'that on rolling along the edges of the former they need only make one revolution. Before the blanks enter the device the'yare suitably coated on their side and bottom portions with adhesive. This operation can be known manner by gluing carried' out in rollers.

liclai-m :'v

' v 1. .Means forforming paper bags or cardboa dboxes with flat rectangular bottoms comprising in combination with a former and a-shaping-channel serving in conjuncthe ,former to form the blank ,to

the other sides against the former, said folding means including a pair of rollers locatedwithinthe shaping channel one at each side of the former, said rollers pro- "ivided with peripheral wedge shaped grooves 5 and said rollers bemg freely rotatable and v I f? 2. Means .forformmg paper bags or cardflat rectangular bottoms.

" ha s sides and the bottom and means for pressing "side of the former,

with peripheral wedge sh board 'boxes .wlth

. a d tion adapted'to roll along the former with the wedge .shaped grooves engaging the edges of. the former.

comprising in combination with a former add a shaping channel servmgm c n unctionrwith the former to form the blank to folding means acting to form two the other sides against the former, said folding nieans including a pair of rollers located withinthe shaping channel one at each said rollers provided aped grooves, said rollers freely rotatable and adapted to roll along the former with their wedge shaped ,grooves engagingthe edges of the former, springs 'for moving the ative position, notches in said rollers to rece'i-veflth'e blank advancing. with the former rollers into inoperand projections on the rollers-adapted to be engaged by the former and to setthe rollers within the shaping channel one at each side ofthe former, said rollers provided with peripheral wedge shaped grooves, said rollers freely rotatable and adapted to roll along the former with their wedge shaped grooves for movmg'the rollers into inoperative sprin POSI- tion, notches in said rollers to receive the blank advancing with the former, projections on the rollers adapted to be engaged by theformer and to set the rollers in rotation, and inwardlyinclined tongues adjacent the notches and adapted to initiate the folding movement of the sides.

In testimony whereof I aflix ture.

my. signa- ERNST HERMANN JAHNE. 

